What is the value of n in the equation 1/2 (n – 4) – 3 = 3 – (2n + 3)?

n=2

Step-by-step explanation:

Step  1  :

           1

Simplify   —

           2

Equation at the end of step  1  :

   1                    

 ((— • (n - 4)) -  3) -  -2n  = 0

   2                    

Step  2  :

Equation at the end of step  2  :

  (n - 4)          

 (——————— -  3) -  -2n  = 0

     2            

Step  3  :

Rewriting the whole as an Equivalent Fraction :

3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  2  as the denominator :

        3     3 • 2

   3 =  —  =  —————

        1       2  

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm